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-rw-r--r--src/cell_explorer.c77
1 files changed, 53 insertions, 24 deletions
diff --git a/src/cell_explorer.c b/src/cell_explorer.c
index 914e4740..c8bbb069 100644
--- a/src/cell_explorer.c
+++ b/src/cell_explorer.c
@@ -3,11 +3,11 @@
*
* Examine cell parameter histograms
*
- * Copyright © 2014 Deutsches Elektronen-Synchrotron DESY,
- * a research centre of the Helmholtz Association.
+ * Copyright © 2014-2017 Deutsches Elektronen-Synchrotron DESY,
+ * a research centre of the Helmholtz Association.
*
* Authors:
- * 2014 Thomas White <taw@physics.org>
+ * 2014,2017 Thomas White <taw@physics.org>
*
* This file is part of CrystFEL.
*
@@ -270,6 +270,52 @@ static void draw_axis(cairo_t *cr, HistoBox *b, int width, int height)
}
+static void draw_label(cairo_t *cr, HistoBox *b, int width, int height)
+{
+ PangoLayout *layout;
+ PangoFontDescription *fontdesc;
+ PangoRectangle ext;
+ char label[256];
+ double sz;
+
+ layout = pango_cairo_create_layout(cr);
+
+ if ( b->have_fit ) {
+ snprintf(label, 255, "%s = %.2f ± %.2f%s",
+ b->label, b->fit_b, b->fit_c/sqrt(2), b->units);
+ } else {
+ strncpy(label, b->label, 255);
+ }
+ pango_layout_set_text(layout, label, -1);
+
+ sz = (height*PANGO_SCALE)/10.0;
+
+ fontdesc = pango_font_description_new();
+ pango_font_description_set_family_static(fontdesc, "Serif");
+ pango_font_description_set_style(fontdesc, PANGO_STYLE_ITALIC);
+ pango_font_description_set_absolute_size(fontdesc, sz);
+ pango_layout_set_font_description(layout, fontdesc);
+
+ /* If text is too wide for box, adjust the size so it fits */
+ pango_layout_get_extents(layout, NULL, &ext);
+ if ( ext.width > PANGO_SCALE*(width-20.0) ) {
+ sz = ((double)PANGO_SCALE*(width-20.0) / ext.width)*sz;
+ pango_font_description_set_absolute_size(fontdesc, sz);
+ pango_layout_set_font_description(layout, fontdesc);
+ }
+
+
+ cairo_move_to(cr, 10.0, 10.0);
+ cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
+ pango_cairo_update_layout(cr, layout);
+ pango_cairo_show_layout(cr, layout);
+ cairo_fill(cr);
+
+ g_object_unref(layout);
+ pango_font_description_free(fontdesc);
+}
+
+
static gboolean draw_sig(GtkWidget *da, GdkEventExpose *event, HistoBox *b)
{
int width, height;
@@ -431,24 +477,7 @@ static gboolean draw_sig(GtkWidget *da, GdkEventExpose *event, HistoBox *b)
cairo_restore(cr);
draw_axis(cr, b, width, height);
-
- cairo_text_extents_t ext;
- char label[256];
-
- cairo_select_font_face(cr, "Serif", CAIRO_FONT_SLANT_ITALIC,
- CAIRO_FONT_WEIGHT_BOLD);
- cairo_set_font_size(cr, height/10.0);
-
- if ( b->have_fit ) {
- snprintf(label, 255, "%s = %.2f ± %.2f%s",
- b->label, b->fit_b, b->fit_c/sqrt(2), b->units);
- } else {
- strncpy(label, b->label, 255);
- }
-
- cairo_text_extents(cr, label, &ext);
- cairo_move_to(cr, 10.0, 10.0+ext.height);
- cairo_show_text(cr, label);
+ draw_label(cr, b, width, height);
cairo_destroy(cr);
@@ -1598,9 +1627,9 @@ int main(int argc, char *argv[])
w.cols_on[0] = 1;
for ( i=1; i<8; i++ ) w.cols_on[i] = 2;
- w.hist_a = histobox_new(&w, " A", "a");
- w.hist_b = histobox_new(&w, " A", "b");
- w.hist_c = histobox_new(&w, " A", "c");
+ w.hist_a = histobox_new(&w, " Å", "a");
+ w.hist_b = histobox_new(&w, " Å", "b");
+ w.hist_c = histobox_new(&w, " Å", "c");
w.hist_al = histobox_new(&w, "°", "α");
w.hist_be = histobox_new(&w, "°", "β");
w.hist_ga = histobox_new(&w, "°", "γ");